Question

A body of mass $ m = 2 \, \text{kg} $ is moving with a velocity of $ 5 \, \text{m/s} $. What is the kinetic energy of the body?

• A. \( 25 \, \text{J} \)
• B. \( 10 \, \text{J} \)
• C. \( 50 \, \text{J} \)
• D. \( 100 \, \text{J} \)

Hint:

Remember: Kinetic energy is always positive, and the formula is \( \text{Kinetic Energy} = \frac{1}{2} m v^2 \).

Answer 1

The Correct Option is A

Step 1: Use the formula for kinetic energy \[ \text{Kinetic Energy} = \frac{1}{2} m v^2 \] Given: - Mass \( m = 2 \, \text{kg} \) - Velocity \( v = 5 \, \text{m/s} \) \[ \text{Kinetic Energy} = \frac{1}{2} \times 2 \times (5)^2 = 25 \, \text{J} \] Answer: Therefore, the kinetic energy of the body is \( 25 \, \text{J} \). So, the correct answer is option (1).